import Vue from 'vue'
import VueRouter from 'vue-router'
import Login from '../components/Login.vue'
import Home from '../components/Home.vue'
import Welcome from '@/components/Welcome'
import Users from '@/components/user/Users'
import Rights from '@/components/power/Rights'
import Roles from '@/components/power/Roles'

Vue.use(VueRouter)

const routes = [
  {
    path: '/', redirect: '/login'
  },
  {
    path: '/login', component: Login
  },
  {
    path: '/home', 
    component: Home,
    redirect: '/welcome',
    children:[
      {
        path: '/welcome', component: Welcome, 
      },
      {
        path: '/users', component: Users,
      },
      {
        path: '/rights', component: Rights,
      },
      {
        path: '/roles', component: Roles,
      }
    ]
  }
]

const router = new VueRouter({
  routes
})
//路由守卫挂载
router.beforeEach((to, from, next) =>{
  //to 将要访问路径
  //from 代表从哪个路径跳转
  //next 是一个函数, 表示放行
  // next() 放行  next('/login') 强制跳转
  if (to.path === '/login') return next()
  //获取token
  const tokenStr = window.sessionStorage.getItem('token')
  //没token跳转
  if (!tokenStr) return next('/login')
  //有跳转
  next()
})

export default router
